Changes:
- 1bc300d Update version.json
- 16f509a Bump Microsoft.NET.Test.Sdk from 16.3.0 to 16.4.0 (#300)
- 6d72f9c Bump Nerdbank.GitVersioning from 3.0.26 to 3.0.28 (#302)
- 3fb0a07 Bump Microsoft.CodeAnalysis.FxCopAnalyzers from 2.9.6 to 2.9.8 (#304)
- 6ac2416 Bump Microsoft.Reactive.Testing from 4.2.0 to 4.3.1 (#309)
- cc4cfba Bump System.Reactive from 4.2.0 to 4.3.1 (#310)
- 88d10f1 Bump Microsoft.SourceLink.GitHub from 1.0.0-beta2-19554-01 to 1.0.0 (#306)
- d41195f Fix memory leak when using ToObservableChangeSet with expireAfter. Fixes #305 (#307)
This list of changes was auto generated.